During the conduction of a nerve impulse along a nerve fiber,what is the sequence of electrical charges on the inner surface of the plasma membrane?

When a neuron is not conducting any impulse,$i.e$.,resting,the axonal membrane is comparatively more permeable to:

Select the correct sequence of statements regarding the conduction of a nerve impulse and select the correct option given below.
$i.$ Rapid influx of $Na^{+}$ inside the axon.
$ii.$ $Na^{+}$ gates are closed and $K^{+}$ gates open after the refractory period.
$iii.$ Intracellular fluid is electronegative and the potential difference is $-70 \ mV$.
$iv.$ Extracellular fluid becomes electronegative.
$v.$ Disturbance to the resting potential.

During the transmission of a nerve impulse,the potential inside the membrane undergoes which of the following changes in charge?

When a neuron is in resting state $I$ not conducting any impulse,the axonal membrane is :

Given below is a diagram of a resting nerve fibre in a polarised state. Select the option which illustrates the correct distribution of $Na^{+}$ and $K^{+}$ ions along the membrane.